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The combination of a short whip antenna and a wideband antenna amplifier allows the antenna to cover the entire range of 3 to 30 MHz without frequency selectivity. The 2N918, 2N6008 or other 200MHz NPN transistor provides 30dB of gain, and the 2N3819 FET source follower drives three transistor amplifiers. The attenuation of this circuit starts at 3 and 35 MHz.
Aquarium lights, also known as water plants growing lights, are mainly made of LED lamp beads, also known as LED aquarium lights, LED water plants growing lights, and LED water plants supplement light.
Aquarium lamp is a special kind of lamp, according to the growth law of plants, it must need sunlight, and the aquarium lamp is a lamp that uses the principle of sunlight to replace sunlight to provide the environment for the growth and development of aquatic plants.
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